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HOMELAB-463: Zookeeper soft anti-affinity to spread across workers #87

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claude-agent merged 1 commit from plane/HOMELAB-463-wk02-cpu into live 2026-03-27 06:18:12 +00:00
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claude-agent commented 2026-03-27 06:18:06 +00:00
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Summary

  • Adds zookeeper.podAntiAffinityPreset: soft to Langfuse ClickHouse subchart
  • Spreads 3 Zookeeper pods across prod-wk-01 and prod-wk-02 instead of all 3 landing on wk-02

Root cause context

The dominant wk-02 CPU driver is the Longhorn instance-manager (2335m, uncapped) serving ClickHouse data I/O — structural, follows data locality. Full resolution requires Longhorn volume migration (separate effort). This PR is a partial improvement.

Test plan

  • ArgoCD syncs Langfuse cleanly
  • Zookeeper pods spread across both workers after rollout
  • Langfuse traces continue working
## Summary - Adds `zookeeper.podAntiAffinityPreset: soft` to Langfuse ClickHouse subchart - Spreads 3 Zookeeper pods across prod-wk-01 and prod-wk-02 instead of all 3 landing on wk-02 ## Root cause context The dominant wk-02 CPU driver is the Longhorn instance-manager (2335m, uncapped) serving ClickHouse data I/O — structural, follows data locality. Full resolution requires Longhorn volume migration (separate effort). This PR is a partial improvement. ## Test plan - [ ] ArgoCD syncs Langfuse cleanly - [ ] Zookeeper pods spread across both workers after rollout - [ ] Langfuse traces continue working
HOMELAB-463: add Zookeeper soft pod anti-affinity to spread across workers
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0166494cb6 
Spreads 3 Zookeeper replicas across prod-wk-01 and prod-wk-02 to reduce
I/O concentration on prod-wk-02. Root cause of high CPU is ClickHouse data
volume I/O via Longhorn instance-manager (structural, follows data locality).
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